How does Gattaca relate to Biology?
The whole movie is about judging people from birth based on their genetic code, not factoring in environmental influences. Telling you from day one that you will only be smart enough to be a janitor, you could never be a doctor, etc. Whereas in reality, someone with the genetic intelligence to be a doctor may go through a terrible childhood, drop out of school, and not even have the education to be a janitor, regardless of his genetic potential. Biology all relates back to genetics. It is, quite literally, the backbone of all living things, and biology is the study of living things. The movie points out a flaw in giving genetics (and thus, Biology) too much power, however. Environment plays a part, too. Nature AND Nurture make us who we are today.
